Multiple fuse



Feb. 1 1927.

, 1,616,148 C. E. STOLTZ MULTIPLE FUSE Filed April '16, 1925 sSheets-Sheet 1 INvENmR:

- mmihfmrz flTIbR/VEYJ I 1 61 ,148 F 1 I C. E. STOLTZ I IIULTIPLE FUSEFiled April 16, 1925 3 SheetsSheet 3 awmgq v Patented Feb. 1, 1927. 4

UNITED STATES PATENT OF F'ICE OHARLES E. BTQLTZ, OF ST. LOUIS, MISSOURI,ASSIGNOR TO MANCHA STORAGE BAT- 'IEBY LQCOMOTIVE COMPANY, LOUIS,MISSOURI, A CORPORATION" OF DELA- WARE.

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' Application filed April 16, 1925. Serial No. 23,595.

This invention relates to multiple fusesv engaged. This is objectionablefor two reasons? (1) Because the relative movement bf the stationarycontacts of the electric circuit and the co-o'perating fuse contacts onthe carrier is apt to create the contacts; and i (2) Arcing of danerous. when the fuse is used on some kin of apparatus, for example, anelectric storage battery mine locomotive.

The main object of my invention is to provide a multiplefuse which is soconstructed that the carrier cannot bemoved to-b a new fuse or perfectfuse into operative ationship withthe electric circuit when any of thefuse contacts'on the carrier are engaged with the contacts in thecircuit, thereby eliminating the possibility of, the current arcing,as'so often occurs in the conventional multiple fuse when the positionof the fuse carrier is c 7 d. As arcing of the current is prevented, t elife of-the contacts is prolonged and the danger of a fire or anexplosion is reduced to the minimum.

Another object is to provide a multiple fuse of novel construction whichis so de- 5 fuse in which the fuse carrier is signed that there is nopossibility of the current arcin during-the operation of inspecting orrep acing the fuses. Another object; is to provide a multiple normallyheld in an operative position by a locking upon being manipulated pre-'ing the carrier'to bring a operative relationship with device, which,paratory to shi perfect fuse into the electric circuit, results inthefuse'con- I lv flame and gas proof tacts on' the carrier and theco-operatingesta- 51) t 7 ing tionary contacts. in the electric circuiseparated with a break. Another-object is to provide a substantial-.xiliich t eeewefiesriit 9f a e an electric are which burns the electriccurrent inside of the housing of the fuses is extremely the preferredform tubular multiple fuse inv constructed in a novel manner thatfacilitates the removal ofthe fuse carrier from section, of my improvedmultiple fuse, showing the carrier'in the position it occupies whenco-operating contacts on the carrier and in the circuit are engaged.

Figure 2 is a front elevational view of said fuse, showing the partsarranged in the position shown in Figure 1.-

Figure 5 is a sectional view, line 5 -5 of Figure 4, looking in thedirection indicated by the arrows.

Figure 6 is a transverse sectional'view, taken on the line 6-6 of Figure1, looking in dthe direction indicated by the arrows; an w Figure 7 is atransverse sectional view, taken on the line 7 -7 of Figure 3. VReferring to the drawings which illustrate of my invention, A designatesthe housing of my improved multiple fuse, which referably comprises acylindrical side w closed at its rear end by an Figure 3 is alongitudinal sectional view, showing the fuse carrier in the position itintegral back wall 1 and provided at its front end with anexternally-screw-threaded flange 2 that is adapted to receive a lockingring 3 which retains the removablev cover 4 of the housing in its closedposition. The fuse carrier B-preferably consists of a substantiallydisk-shaped :member formed of insulating material and rigidly connectedto a shaft 5 that projects forwardly throug h the removable cover 4 oftheho'usi sald shaft being surrounded by an inward y-projecting hearing6 on the inner side of said cover.I At the rear end of said shaft is anextension or reduced portion 5 that projects into a guide 7 on the backwall 1 of the h The'shaft 5 is mounted in such a y that t an awa d a Fam9 selected fuse onthe carrier in operative relationship with theelectric circuit and also moved longitudinally of the bearings 6 and 7which sustain it so as to disengage two of' the fuse contacts on thecarrier B from the co-operating contacts of the electric circuit andhold the fuse carrier R 1'51 such a position that it will be impossiblefor the current to are between any of the contacts on the carrier andthose in the electric circui when the position of the carrier isthereafter changed to bring a different vfuse, for example, a perfectfuse, into operative relationship with the electric circuit. Preferably,the fuse carrier B, the shaft of same and the removable cover 4 of thehousing A are combined as a single unit so as to cause the fuse carrierto be completely withdrawn from the housing A when the cover 4 isremoved.

The supply wires 0: of the electric circuit are connected to stationarycontacts 8 that are mounted o'n'a disk-shaped insulator C that isconnected to the rear wall 1 of the housing by concealed fasteningdevices 9 and said insulator is held s aced. away from said wall andfrom the cyhndrical side vwall of the housing by lugs 10 on said walls,as shown in Fi ure 3. The contacts 8 of the electric circult are setflush with the front face of the insulator C and are provided withbinding screws 11 or the like for securing the supply wires a! to saidcontacts. As shown in Figures 3 and 7, the contacts 8 are arranged atthe lower side of the housing A and the supply wires :1: are led intosaid housing through stufling boxes 12 on the back wall 1 of thehousing.

The fuse carrier B is provided with a plurality of movable contacts towhich fuses are detachably connected. In the form of my invention hereinshown said carrier is equipped with four contacts 13 arran ed so thatthree fuses 14, 14 and 14" can .detachably connected to the same, asshown in Figure 6. When the fuse carrier is in the position shown insaid figure the fuse 14 is in operative relationship with the electriccircuit and both of the fuses 14 and 14 are inoperative. If the fuse 14becomes defective, the carrier B can be turned to the right to bring thefuse 14 into operative position, or turned to the left to bring the fuse14 into operative position, the contacts 13 on the carrier to which thefuses are connected being 30- disposed that a least two of said contactswillalways be in alignment with the contacts 8 of the electric circuitwhenever the fuse carrier is arranged in one of its three differentoperative positions. Preferably, the contacts 13 on the fuse carrier aremounted in such a manner that they are capable of moving relatively tothe carrier in a direction parallel to the and they are backed us bysprings 15, as shown in Figures 1 an 3, so as to reduce the tendency ofthe electric current to are when the fuse carrier is moved forwardlypreparatory to turning the carrier to bring a different fuse thereoninto operative relationship with the circuit. The ortion of the shaft 5that passes through t e bearing 6 is preferably provided on its exteriorwith grooves 16 so as to tend to eliminate the possibility of gasenterin the housin or a flame escaping from t e housing tirough thebearing 6, and if desired, the fuse carrier can be provided with aforwardly-projecting, annular flame shield 17 that surrounds the shaftbearing 6 on the cover 4 when the fuse carrier is moved forwardly toopen the electric circuit. By constructing the housing and the fusecarrier shaft in this manner I make the device practically flame and gasproof.

As previously stated, one of the objects 7 of the invention is toprevent the electric current from arcing, due to relative movement ofthe contacts on the fuse carrier and the contacts of the electriccircuit. In the form of my invention herein illustrated this isaccomplished by equipping the device with a locking element, which, whenarraged in its operative position, holds the fuse carrier in one of itsthree operative positions and revents the fuse carrier from being turneeither to the right or to the left, and combining said locking elementwith the carrier and with a spring in such a way that the fuse contactson the carrier will be separated with a quick break from the contacts ofthe electric circuit when said locking .element is moved into itsinoperative position. In view of the fact that the fuse carrier can beturned only when all of the contacts on said carrier are spaced far awayfrom the stationary contacts to which the supply wires of the electriccircuit are connected, there is no danger of the. contacts being burnedor damaged by arcing of the current, resulting from relative movement ofthe fuse contacts and circuit contacts during the operation of bringinga new fuse or perfect fuse into operative position with relation to theelectric circuit. Moreover, the device is so constructed that it isimpossible for th 'current to arc'between the contacts during the oeration of bodily removing the fuse carrier from the housing A, becausethe cover of the housing cannot be removed without first separatingthe-contacts on the carrier froln the contacts of the circuit. In theform of my invention herein illustrated the shaft 5 of the fuse carrieris provided at its front end with a handle or knob D, and a coiledexpansion spring 18 is mounted on the front end portion of the shaft 5between said. knob and the removable cover 4 of the housing, 'so asto-exert pressure on the shaft in a direction tendlng to move itforwardly relatively to said cover, andthus hold the fuse carrier Bspaced a considerable distance away from the insulator C that carriesthe stationary contacts 8, as shown in Figure 3, the knob D beingrigidly connected to the shaft 5, as, for example, by means of a pin 19,and said knob being provided on it's'interior with a socket or a recessthat houses the spring 18. The locking element previously referred to isdesignated in the drawings by the reference character E and preferablyconsists of a lever pivotally mounted on a forwardly-projecting lug onthe outside of the cover 4 of the housing and constructed in such amanner that when it is arranged in its operative position, shown inFigures 1 and 2, it will hold the co-operating contacts on the carrierand in the circuit in engagement and'also act as a stop or abutment thatco-operates with a part on the handle to prevent the fuse carrier B frombeing turned,'and when it is arranged in its inoperatve position, shownin Figures 3 and 4, it will permit the spring 18 to expand,

thus separating said contacts, and will not interfere with therotarymovement of the handle D and the fuse carrier shaft 5 connected theretoto bring the contacts of one or the other of the fuses on said carrierinto lalignment with the contacts 8 of the electric circuit. In thedevice herein shown the locking element-E is provided at its inner endwith a cam portion 21 whose periph- .--When the locking element E is inthis position, namely, its operative position, as shownin Figures 1 and2, a flat face. 23 on one side of the cam portion 21 will positioned inclose proximity to one of pluuality of fiat faces '24, 24 and 24 on thehandle D, as shown in Figure 2, thereby preventing the handle D and theparts connected to same from being turned in eitherdirection, due, ofcourse, to the fact that the flat face 23 on the locking element E ispositioned in such close proximity to one of said flat faces on thehandle I) that any attem t to turn said handle causes the portion 0faces are formed to .be brought squarely against thelocking element E.When it is desired to turn the fuse carrier B to bring upwardly from thehandle on which said flat a different fuse, for example, a perfect fuse,I

into operative relationship with the electric whereupon the spring 18expands and moves the fuse carrier B, the shaft 5 and the handle Dlongitudinally or outwardly into the position shownin igure 3, whereinit will be noted that the fuse contaots13 on the carrier are spaced aconsiderable distance away from the co-operating contacts 8 of theelectric circuit. When the locking element E is arranged in thisposition, namely, its inoperative position, a flat face 25 on saidlocking element bears against the flan e 22 on the handle D,and thusacts as an a utment that limits the outward movement of said handle andthe parts controlled by said handle, In order that the handle D and fusecarrier shaft-5 may be rotated, either to the right or to the left, whenthe locking element E is arranged in its inoperative position, theportion on said locking element that contains the carn'21 and the flatside face 23, isso disposed that when the locking element is in thisposition, sufficient clearance is provided between the flat face 23 andthe part on the handle that contains the fiat faces 24, 24 and 24 topermit said handle to be turned freely. In other words, when the lockingelement E is in its operative position, a portion on said lockingelement is disposed in such relation with a portion on the handle D thatit is impossible to rotate said handleeither to the right or to theleft, but when said lockingelement E is moved into its inoperativeposition, the relationship between said co-operating portions is changedsufiiciently to permit the handle D tobe turned in either direction.

If the carrier B is equipped with three fuses,

as herein illustrated, the handle D is provided with three flat faces24, 24 -and 24 so that the flat face 24 will be operative or disposed inparallel relationship with the cooperating flat face 23 on the lockingelementv E when the fuse 14 on the carrier is in its operativeposition,the fiat face 24" on'the handle D will be disposed in operativerelationship with the face 23 on the locking element when the fuse 14 onthe carrier is operative, and the fiat face 24" on the handle D will bein operative relationship with the face 23 on the locking elementwhenthe fuse 14 on the carrier is operative. Any suitable means can beusedfor enabling the operator incharge of the device to know which oneof the fuses on the carrier is in operative relationship with the electrc circuit without. removing 1 1. 6 9.0V?! 1: of the housing A, In

.move out of en agement with te flange 22 on the handle ments 27 27 and27 that co-operate with said hand 26 to denote the position of the fuseson the carrier B.

The spring 18, previously referred to, that is used to move the fusecarrier shaft 5 forwardly, is preferably made strong enough so that itwill separate the co-operatin con; tacts on the carrier B and insulator(J with a quick break when the locking element E is inoved into itsinoperative position, shown in Figure 3, thereby preventing the currentfrom arcing during the operation of moving the fuse carrier B forwardlyinto its inoperative position, shown in'Figure 3, preparatory torotating said fuse carrier to bring a perfect fuse into operativerelationship with the electric circuit. The springs 15 that back up thefuse contacts 13 on the carrier B exert sufiicient pressure on saidcontacts to insure them bearing snugly against the co operatingstationary contacts 8 to which the supply wires :1: of the electriccircuit are connected, and said springs 15 also tend to eliminate arcingduring the operation of moving the fuse carrier forwardly into itsinoperative position, due to the fact that they cause the fuse contacts13 to remain in engagement with the co-operating stationary contacts 8while the cam 21 on the locking element E is moving over the flange 22on the handle D of the fuse carrier. In other words, the slight forwardmovement of thecarrier B away from the contact insulator C during theoperation of moving the locking element E into its inoperative position,will not cause the current to are between the contacts 8.

and 13, due to the fact that the springs 15 hold said contacts pressedtightly'together until the locking element E has reached such a positionthat the spring 18 is freeto expand and throw the fuse carrier Bforwardly with a quick movement. While I have herethe cover 4 of thehousing, such, for example, as a retaining pin F that is adapted to bearranged in a pair of perforated lugs 28 on'the outside of the housing Ain such a position that one end of said pin is positioned in a notch 29in the peripheral edge of the removable retaining ring 3 that surroundsthe cover 4 of the housing, said pinF being provided with a stop 30 thatbears aga nst one of the lugs 28 and also provided with a hole throughwhich the hasp of a padlock 31 can be inserted, so as to prevent saidpin from being disengaged from the lugs 28 or moved in a direction towithdraw the end of same from the notch 29 in the cover retaining'ring3. r

A multiple fuse of the construction above described is of such simpledesign that it can be manufactured at a low cost; it is of such designthat the contacts are not liable to be burned or injured by arcing ofthe electric current, due, of course, to the fact that it is constructedin such a manner that the fuse carrier cannot be turned whenever any ofthe contacts on same are engaged with the contacts in the circuit, andthe cover of the housing A cannot be removed without first separatingthe contacts on the carrier from the contacts of the electric circuit;the housing of the device is practically flame and gas proof, andasimple means is provided on the exterior of the housing for indicatingthe position of the fuses on the carrier.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1; A multiple fuse, comprising a carrier provided with a plurality offuses, any one of which is adapted to be arranged in operativerelationship with an electric circuit by moving the carrier in a certainmanner, cooperating contacts on said carrier and in said circuit, a partcombined with said carrier, a manually operable locking device, which,when arranged in its operative position, co-operates with said part toprevent movement of the carrier, and means for automatically separatingthe co-operating contacts on the carrier and in the electric circuitwhen said locking device is rendered inoperative.

2. A multiple fuse, comprising a rotatable carrier provided with aplurality of fuses, any one of which is adapted to be brought intooperative position with an electric-circuit by rotating the carrier,cooperating contacts on said carrier and in said circuit, a partconnected to said carrier to turn with same, and a manually-operablelocking device that co-operates with said part to prevent the carrierfrom being rotated when the contacts of the electric circuit are inengagement with one pair of fuse contacts on the carrier.

3. A multiple fuse, comprising a manuallyoperable carrier provided witha plurality of fuses, any one of which is adapted to be brought intooperative relationship with a circuit by movlng the carrier in a certainmanner, co-operating contacts on said carrier and in said circuit, and amovable, manually-operable locking means that normally holds the carrieragainst movement in a direction to change the relationship between thefuse thereon and the electric circuit, conill) luo

tacts of the operative fuse and the co-operating contacts of theelectric circuit can separate and before the carrier can be moved .to

- change-therelationship between the fuses thereon and the electriccircuit.

4. A multiple fuse, comprising a carrier provided with a plurality offuses, any one of which is adapted to be brought into operativerelationship with an electriccircuit by moving the. carirer in a certainmanner, cooperating. contacts on said carrier and in said circuit, amanually operable locking ele-- ment that normally prevents the carrierfrom being moved in the manner referred to and which is adapted to berendered inoperative before such movement can be imp rted to thecarrier, and means for causing t e co-oper ating contacts on the carrierand in the electriccircuit to be separated with a quick breaksimultaneously with the movement of said locking element into itsinoperative position.

'5. A multiple fuse, comprising a manual- -1y-operable rotatable carrierprovided with a plurality of fuses, any one of which vcanbe brought intooperative relationship with an electric circuit by rotating the carrier,cooperating contacts on said carrier and in said circuit, amanually-operable locking element, which,'when arranged in its operativeposition, prevents thecarrier from being turned and which, when arrangedin its inoperative position, permits the carrier to be turned, and

means for insuring the contacts of the electric circuit being separatedfrom the 00-0 ,.erati.ng contacts on the carrier when said lockingelement is in a efiosition to permitthe fuse carrier to be turn v 6. Amultiple fuse, comprislng a carrier -provided with a plurality of fuses,any one of which is ada ted to be brought into operative relations 'pwith an electric circuit by moving the carrier in a certain manner,cooperating contacts on said carrier and in said circuit, a amanually-operable means which is normally operative to ,prevent thecarrier from being moved in the manner referredt'o and which is adaptedto be moved manually into an inoperative position to permit suchmovement of the carrier, and an independent means for separating the'co-o erating contacts in the electric circuit an on the carrierwhensaid manually operable means is rendered inoperative.

7. A multiple fuse, comprising a rotatable carrier provided with aplurality of fuses equipped wit-h contacts, co-operating contacts in anelectric circuit, a resilient means that exerts pressure on said carrierin a direction tending to effect the separation of the contacts of theelectric circuit and the contacts of the operative fuse on the carrier,and an inde endent manually-operable means that normally holds theco-operating contacts on the carrier and in the electric circuit inengagement with each other, constructed so that the carrier cannotbeturned when said co-operating contacts are in engagement.

8. A multiple fuse, comprising a rotatable carrier provided with aplurality of fuses,

any one of which can be brought into operative relationship with anelectric circuit by turning the carrier, means for normally holding thecarrier in such a osition that one of the fuses thereon will beoperative, means for preventing the carrier from being turned when it isin said position, and a resilient means for bodily moving the carrier ina direction to destroy the operative relationship between all of thefuses thereon and the electric circuit when the means first referred tois rendered inoperative.

9. A multiple fuse, comprising a rotatable .carrier provided with aplurality of fuses connected to contacts on the carrier, co-operatingcontacts arranged in an electric circuit, a resilient means that tendsto move the carrier in a direction to separate the fuse contacts on samefrom the contacts of the electric circuit, and a manually-o erable device for moving the carrier in a irection to bring the contacts of onefuse on the carrier into engagement with the contacts of the electriccircuit, constructed so that it prevents the carrier from beingturned'when said co-operating contacts are in engagement with eachother. I

10. A multiple fuse, comprising a rotatable carrier provided with aplurality of fuses equipped with contacts, any one of which can bebrought into operative relationship with an electric circuit by turningthe carrier, contacts in said circuit that are adapted to co-operatewith the contacts of said fuses, said carrier bein mounted so that'itcan be moved lon itu inally to dis engage the contacts of t e electriccircuit from the .contacts of the operative fuse on the carrier, amanually-operable locking element for moving the carrier longitudinallyin one direction, a spring for movin the carrier longitudinally in theopposite irection, and a part connected with the carrier and adapted toco-operate with said locking element for holding the carrier againsrotary movement when the contacts of th circuit are in engagement withthe contacts of the operative fuse on the carrier.

11. A multiple fuse, comprising a rotatable carrier mounted in such away that it can be shifted longitudinally of its axis of movement, fuseson saidcarrier connected to contacts '.on the carrier, stationarycontacts forming part of an electric circuit, a spring for moving thecarrier longitudinally in a direction to separate the contacts of theoperative fuse from the contacts of the electric circuit, amanually-operable device for moving'the carrier longitudinally inopposition to said spring and for holding the contacts of the operativefuse on the carrier in engagement with the contacts of the electriccircuit, and a part combined with the carrier and arranged so that itwill co--operate with said manually -operable device to hold the carrieragainst rotary movement when any of the co-operating contacts on thecarrier and in the supply circuit are engaged.

12. A multiple fuse, comprising a housing, a rotatable carrier in saidhousing pro vided with a plurality of fuses, fuse contacts on saidcarrier, co-operating fuse contacts in an electric circuit, a supportingshaft for said carrier mounted in the housing in such a Way that it canrotate and also move longitudinally of its axis, a manually-operabledevice on the exterior of the housing for moving said shaftlongitudinally in a direction to cause the fuse contacts on the carrierto engage the contacts of the electric circuit, a spring for moving saidshaft in the opposite direction, and a part on said shaft that isadapted to co-operate with said device to prevent said shaft from beingrotated when said co-operating contacts are engaged. I

13. A multiple fuse, comprising a housing, a fuse carrier arrangedinside of said housing and provided with fuse contacts that are adaptedto co-operate with contacts in an electric circuit, a supporting shaftfor said carrier mounted in said housing in such a way that it canrotate and also move longitudinally of its axis, a pivotally mountedlockin device on the exterior of the housing provi ed with a cam, amember connected to said shaft and provided with a portion that isadapted to be engaged by said cam to move said shaft longitudinally inone direction, a spring for moving said shaft 1ongitudinally in theopposite direction, and cooperatin surfaoeson said locking device and ont e member on said shaft for holding said carrier against rotarymovement when the fuse contacts thereon are in engagement with thecontacts of the electric circuit.

14. A multiple fuse, comprising a housing, a fuse carrier in saidhousing provided with spring-pressed fuse contacts, contacts in anelectric circuit adapted to be engaged by said fuse contacts, asupporting shaft for said carrier projecting forwardly through anopening in the housing, a handle on the outer end of said shaft forturning same, a spring for moving said shaft in a direction to separatethe fuse contacts thereon from the contacts of the electric circuit, amanually-operable device on the exterior of the housing for moving saidshaft longitudinal- 5 ly' in opposition to said spring, and cooperatingsurfaces'on said device and on said handle for preventing the fusecarrier from being turned when any of the fuse contacts thereon are inengagement with the contacts of the electric circuit.

15. A multiple fuse, comprising a housing, a carrier in said housingprovided with a plurality of fuses, any one of which can be arranged inoperative position with relation to an electric circuit by turning thecarrier, a supporting shaft for said carrier mounted in said housing insuch a way' that it can rotate and also move longitudinally of'its axis,a handle on said shaft arranged on the outside of the housing, a lockingdevice on the exterior of the housing provided with a cam that isadapted to engage a part on said handle so as to move said shaftlongitudinally to arrange one of the fuses thereon in operative positionin the electric circuit, a spring for moving said shaft in the oppositedirection, and a plurality of surfaces on said handle corresponding innumber to the number of fuses on the carrier, any one of which iscapable of (:0- operating with said locking device to hold the carrieragainst rotary movement when one of the fuses on the carrier is inoperative position. a

16. A multiple fuse, comprising a housing, a removable cover on saidhousing, a carrier arranged inside of said housing and provided with aplurality of fuses, any one of which can be arranged in operativeposition in an electric circuit by turning the carrier, a supportingshaft for said carrier, hearings on the cover of'the housing and on theopposed wall'of the housing for supporting. said shaft, a handleconnected to said shaft at a point outside of the housing, apivotally'mounted locking device on said cover provided with a cam thatis adapted to be moved into engagement with a part on said handle tomove said shaft longitudinally in a direction to carry one of the fuseson the carrier into operative position in the electric circuit, a springfor moving said shaft longitudinally in the opposite direction,co-operating surfaces on said handle and locking device for holding thecarrier against rotary movement when one of the fuses thereon iselectrically connected with the circuit, and means on the exterior ofthe housing which indicate the position of the fuses on the carrier.

17 A multiple fuse, comprising a housing, a removable cover at the frontend of said housing, a bearing projecting inwardly from said cover,'-abearing on the back wall of connected, a handle connected to said shaftat a point-outside of said housing, a spring surrounding said shaftbetween said handle andthe removable cover of the housing formoving-said shaft longitudinally in one directio'n, a locking devicepivotall mounted on '-the outside of said cover an provided with a cam,a part on said handle that is adopted to be engaged by said cam toeffect movement of said shaftin opposition to said Ispning,.co-operating surfaces on said locking nected with theelectriccircuit, and cooperating means on said handle and on the cover of thehousing for indicating the position of the fuses on the carrier.

CHARLES E. S'IIOLTZ.

